Research ArticleOpen AccessGoogle Scholar indexed
Study of the Heat Transfer of a Two-Tubular Exchanger with a Hemispherical End Buried
Applied Mechanics and Engineering Laboratory, National Engineering School of Tunis, University of Tunis-El Manar, Tunis, Tunisia
- 1 Applied Mechanics and Engineering Laboratory, National Engineering School of Tunis, University of Tunis-El Manar, Tunis, Tunisia
Energy and Power Engineering·Volume 14 (2022)·Pages 705–718·Published 7 November 2022·DOI10.4236/epe.2022.1411038
Copy link · social · email
Abstract
In this paper, a numerical study of a buried hemispherical double-pipe heat exchanger with soil by using geothermal energy is presented. Since the local air-wall exchange coefficient throughout the heat exchanger is unknown, a study of mathematics based on the theory of Green’s functions in the unsteady state was developed. The complexity of the geometry has led us to develop a numerical study that allows us to obtain results that reflect the importance of heat exchange. The applications are numerous, especially in the storage of energy in the soil to optimize greenhouses according to the cycle of the seasons.
KeywordsLaminar Forced ConvectionNusselt NumberHorizontal Heat ExchangerTemperature Distribution
- Mnasri, T., Ben Younès, R., Mazioud, A. and Durastanti, J.F. (2010) FVM-BEM Method Based on the Green’s Function Theory for the Heat Transfer Problem in Buried Co-Axial Exchanger. Comptes Rendus Mecanique, 338, 220-229. https://doi.org/10.1016/j.crme.2010.04.004
- Desmons, J.Y. and Ben Younis, R. (1997) Prévision à long terme de la réponse d’un stockage de chaleur sensible dans le sol. International Journal of Heat and Mass Transfer, 40, 3119-3134. https://doi.org/10.1016/S0017-9310(96)00334-1
- Subramanian, S.R. (2012) The Graetz Problem. https://web2.clarkson.edu/projects/subramanian/ch490/notes/Graetz Problem.pdf
- Sieder, E.N. and Tate, G.E. (1936) Heat Transfer and Pressure Drop of Liquids in Tubes. Industrial & Engineering Chemistry Research, 28, 1429-1435. https://doi.org/10.1021/ie50324a027
- Hausen, H. (1943) Darstellung des Warmeüberganges in Rohren durch verallgemeinerte Potenzbeziehyngen, VDI. Verfahr, 4, 91-98.
- Ginelsky, V. (1984) Forced Convection in Ducts, Heat Exchanger Design Hand Book. Hemisphére Publishing Corporation, London.
- Kim, W.K., Martin, H. and Gnielinski, V. (1993) Pressure Drop and Heat Transfer in Shell and Tube Heat Exchangers without Baffles. Part I. The Graetz-Nusselt Problem in Acylindrical Shell Containing a Bundle of Seven Tubes. Chemical Engineering and Processing, 32, 99-110. https://doi.org/10.1016/0255-2701(93)85020-G
- Mnasri, T., Ben Younès, R., Raddaoui, M. and Elouragini, S. (2007) Simulation of Convective Heat-Transfer Coefficient in a Buried Exchanger. American Journal of Applied Sciences, 5, 927-933. https://doi.org/10.3844/ajassp.2008.927.933
- Naili, N., Hazami, M., Attar, I. and Farhat, A. (2013) In-Field Performance Analysis of Ground Source Cooling System with Horizontal Ground Heat Exchanger in Tunisia. Energy, 61, 319-333. https://doi.org/10.1016/j.energy.2013.08.054
- Boughanmi, H., Lazaar, M. and Guizani, A. (2018) A Performance of a Heat Pump System Connected a New Conic Helicoidal Geothermal Heat Exchanger for a Greenhouse Heating in the North of Tunisia. Solar Energy, 171, 343-353. https://doi.org/10.1016/j.solener.2018.06.054
- Padet, J. (2010) Principe des Transferts Convectifs. Seconde Edition, Société Francaise de Thermique, France. https://www.sft.asso.fr/
- Dhahri, I. and Ammar, L. (2017) Distribution of the Temperature in the Coaxial Tube Heat Exchanger with Spherical End. Case Studies in Thermal Engineering, 10, 621-627. https://doi.org/10.1016/j.csite.2017.11.003